package handlers

import (
	"github.com/gin-gonic/gin"

	"git.netcell-it.de/projekte/edgeguard-native/internal/cluster"
	"git.netcell-it.de/projekte/edgeguard-native/internal/handlers/response"
)

// ClusterHandler exposes cluster-state endpoints. v1 is read-only:
// the UI shows the list of registered nodes but cluster-join + write
// operations land in Phase 3.1.
type ClusterHandler struct {
	Store    *cluster.Store
	LocalID  string
}

func NewClusterHandler(store *cluster.Store, localID string) *ClusterHandler {
	return &ClusterHandler{Store: store, LocalID: localID}
}

func (h *ClusterHandler) Register(rg *gin.RouterGroup) {
	g := rg.Group("/cluster")
	g.GET("/nodes", h.ListNodes)
}

func (h *ClusterHandler) ListNodes(c *gin.Context) {
	nodes, err := h.Store.List(c.Request.Context())
	if err != nil {
		response.Internal(c, err)
		return
	}
	response.OK(c, gin.H{
		"nodes":     nodes,
		"local_id":  h.LocalID,
	})
}